Atoms And Atomic Structure 1v1v17

Atomic Structure Pre-Lab Study Questions 1. Describe the set up of the periodic table. The table is organized by atomic number, metals, non metals, metalloids, periods , groups and stability.Elements are arranged in order of increasing atomic numbe r. Their physical and chemical properties show a pattern. Elements that have sim ilar properties are arranged in groups in vertical columns. Horizontal rows are called periods. Each period contains more elements than the previous. This is du e to increasing energy levels. 2. Where are the alkali metals and the halogens located on the periodic table? Li, Na, K, Rb, Cs, Fr (alkali metals)- F, Cl, Br, I, At, ununseptium (halogens) 3. On the following list of elements: Mg, Cu, Br, Ag, Ni, Cl, Fe, and F, list t he transition elements __Cu, Fe_____________________ and list the halogens __F, Cl, __________________ 4. Complete the list of names of elements and symbols: Name of Element Symbol Potassium ___sodium__ __K________ Na Sulfur _phosphorous____ ___S_______ P Nitrogen __iron___ ____N______ Fe Magnesium ___chlorine__ ___Mg_______ Cl Copper ____silver__ ___Cu_______ Ag A. Physical Properties of Elements Atomic Physical properties (Look up the following elements online to find the pr operties listed below) Element Symbol Atomic Number Color Luster Metal/ Nonmetal Aluminum Al 13 silver/ grey shiny metal Carbon C 6 clear to yellow to black dull nm Copper Cu

29 red shiny m Iron Fe 26 slver shiny m Magnesium Mg 12 grey/ white dull m Nickel Ni 28 silver shiny m Nitrogen N 7 colorless dull nm Oxygen O 8 colorless- gas blue- liquid dull nm Phosphorus P 15 colorless/ red/ silvery/ white dull nm Silicon Si 14 grey/ blue shiny nm Silver Ag 47 silver grey shiny

m Sulfur S 16 yellow dull nm Tin Sn 50 silver/ grey dull m Zinc Zn 30 blue/ grey shiny m Q.1. From their positions on the periodic table, categorize the following elemen ts as metals (M) or nonmetals (NM). Na___m__ S__nm___ Cu___m__ F__nm__ Fe__m___ C__nm___ Ca__m___ Q. 2. Give the name of each of the following elements: a. b. c. d. e.

Noble gas in Period 2:_______Ne__________ Halogen in Period 3:________Cl_________ Alkali metal in Period 3:____Na_____________ Halogen in Period 3:_______Cl__________??? (same as B?) Alkali metal in Period 4:______K___________

* Halogens: Period 2- F; Period 3-Cl; Period 4-Br; Period 5-I; Period 6-At; Peri od 7 Uus B2. Element Metal/Nonmetal Shiny or Dull Chromium metal shiny Gold metal shiny Lead metal shiny Cium metal dull Silicon semi-metal (metal) shiny

C. Subatomic Particles (Pease see below as chart input is not functioning) Iron- atomic number- 26; mass number- 56; protons- 26; neutrons 30; electrons26 Aluminum- atomic number- 13; mass number 27; protons- 13; neutrons- 14; electron s 13 Potassium- atomic number- 19; mass number- 39; protons- 19; neutrons- 20; electr ons 19 Bromine- atomic number- 35; mass number 80; protons- 35; neutrons- 45; electrons - 35 Gold- atomic number 79; mass number- 197; protons- 79; neutrons- 118; electrons 79 Iodine- atomic number 53- mass number- 127; protons- 53; neutrons- 74; electrons 53 Element Atomic Number Mass Number Protons Neutrons Electrons Iron

30

27 13

19 20 Bromine 80

Gold 197

53 74

D. Isotopes Nuclear Symbol Protons Neutrons Electrons 40Ca 20 Protons- 40 Neutrons- 20 Electrons- 40

20 Ca 42 electrons 20 20 22 43Ca 20 Protons- 43 Neutrons-23 Electrons- 43

20 Ca 14 protons 20 24 20 46Ca 20 Protons- 46 Neutrons- 26 Electrons- 46

Q. 3. A neutral atom has a mass number of 80 and has 45 neutrons. Write its com plete symbol. 35Br 80

Q. 4. An atom has two more protons and two more electrons than the atom in ques tion 3. What is its complete symbol? 37Rb 82